Fix car fake/cruise top gear SFX at high FPS.

Re-implements 2d3f93e

src/audio/AudioLogic.cpp

@@ -2347,11 +2347,17 @@ cAudioManager::ProcessPlayersVehicleEngine(cVehicleParams& params, CVehicle* veh
 			SampleManager.StopChannel(CHANNEL_PLAYER_VEHICLE_ENGINE);
 			if (isMoped || accelerateState >= 150 && wheelsOnGround && brakeState <= 0 && !params.m_pVehicle->bIsHandbrakeOn
 				&& !lostTraction && currentGear >= params.m_pTransmission->nNumberOfGears - 1) {
-				if (accelerateState >= 220 && params.m_fVelocityChange + 0.001f >= velocityChangeForAudio) {
-					if (nCruising < 800)
-						++nCruising;
-				} else if (nCruising > 3) {
-					--nCruising;
+#ifdef FIX_BUGS
+				// Prevent the fake top gear ("cruise gear") rising in pitch too quickly at high FPS.
+				if (CTimer::GetLogicalFramesPassed())
+#endif
+				{
+					if (accelerateState >= 220 && params.m_fVelocityChange + 0.001f >= velocityChangeForAudio) {
+						if (nCruising < 800)
+							++nCruising;
+					} else if (nCruising > 3) {
+						--nCruising;
+					}
 				}
 				freq = 27 * nCruising + freqModifier + 22050;
 				if (engineSoundType == SFX_BANK_TRUCK)